Fountain-pen.



FOUNTAIN PEN.

'Application filed Dec. 18, 1900.)

Patented m. 26, law.

(no. Model WITNESS ESr I |NVENTOR ma v w ATTORNEYS NTED STATES WILLIAMW. STEWART, OF BROOKLYN, NEW YORK.

FOUNTAINI-PENQ SPECIFICATION forming part of Letters Patent No. 668,760,dated February 26, 1901.

Original application filed July 14, 1900, Serial No. 23,572. Divided andthis application filed December 13, 1900. Serial No. 39,636. (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM -W. STEWART, a citizen of the United States,residing in the borough of Brooklyn, county of Kings, city and State ofNew York, have invented certain new and useful Improvements inFountain-Pens, of which the following is a specification. I I

My invention relates to fountain-pens and the object of said inventionis to provide a simple, cheap, and efficient fountain-pen; and to thisend myinvention consists in the novel arrangement and combination of'parts to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side View, partly insection, of one form of fou ntain-pen embodying my invention. Fig. 2 isa transverse sectional view of the same, the view being taken on theline 2 2 of Fig. 1. Fig. 3 is a detail side view showing one form of theso-called controlling-piece. Fig. 4 is a detail plan view of the pen-nibwhich I prefer to use.

Referring to the drawings, A indicates the hollow handle of afountain-pen, which constitutes the ink-reservoir. Connected to thereservoir A is a nozzle B, which is in open communication with thereservoir and with the open air. This nozzle may 'be formed integralwith the handle or reservoir or may, as shown in the drawings, beadapted to be connected thereto by suitable connection, as indicated ata. The nozzle B has a central bore 1) extending therethrough, and seatedwithin this bore is a pen-nib O. The pen-nib O is preferably constructedwith a reduced shank, as indicated in Fig. 4 of the drawings, and isseated within the nozzle, so as to divide the bore thereof, as indicatedin Fig. 2 of the drawings, it being understood that suitable grooves 0may be provided in the bore for the reception of the pen-nib. Beneaththe pen-nib O is situated what I term a controlling-piece D. Thiscontrolling-piece is preferably made of gold or equivalent material andmay be seated in a groove 01, as indicated in Fig. 2 of the drawings,when the so-called controlling-piece is made in the form indicated inFig. 3 of the drawings. Whatl have designated a controllingpieoe Dcomprises a plurality of transversly-extending pins at 00 m which arepreferably spaced apart, as indicated in the drawings. These .pins maybe separate pins secured in place in any suitable manner, or they may beformed by suitably slitting a plate, as indicated in Fig. 3 of thedrawings, and the controlling-piece may be maintained in place bysecuring the pins or the piece in which the pins are formed to a wall ofthe bore of the nozzle or to the pen-nib. The pins are, however,preferably maintained in contact with the pennib. From an examination ofFig. l of the drawings it will be observed that the so-calledcontrolling-piece, comprising the pins, terminates at the inner andouter ends within the nozzle. Thus the outer pin w constitutes theforward terminal, while the inner pin 03 constitutes the rear terminal.These terminal pins and the intermediate pin it constitute whatl termabutments,. which are within the field of the pen-nib for purposes whichwill be hereinafter more fully explained. It will be observed that theplane formed by the pins m at 00 extends longitudinally 0f the bore, soas to form a passage at each side thereof.

By the provision of the controlling-piece of the character described Iam able to provide against a too-rapid inlet of air to the reservoir,which would occasion a too-free flow of ink or the dropping of ink fromthe pen, as is common in fountain pens of certain constructions. The airin entering the nozzle below the pen-nib will, with the ink, form afilm, which will be retained against rapid movement to the interior ofthe reservoir by the controlling-piece when the pen is used in the actof writing. At the same time the controlling-piece retains a quantity ofink at the position where it is situated for the ready supply of ink tothe pen-nib. The controllingpiece likewise forms a nucleus for the readyflow of ink from the lower wall of the bore of the nozzle to the underside of the pen-nib, where it may flow with the necessary freedom aroundthe film. It will thus be understood that means are provided to preventthe tooready inlet of air to the reservoir from below the pen-nib andthat what I term a choking of the air is provided at this point. On theother hand, the opening in the bore at the upper side of the pen-nib isor may be free from obstruction, and the air in its passage to theinteriorof the reservoir will follow this course. The inlet of air fromabove the pen-nib will form, together with the ink, a film, which willprevent the ink from flowing out of the. pen through this channel,whereas the ink will be retained and what I term an auxiliary supplyprovided by the controlling piece at the under side of the pen. This isthe natural means for the inflow of air and the flow of ink to thepen-nib, for the reason that the air, being the lighter fluid, naturallyshould pass into the reservoir from above, whereas the ink, which is theheavier fluid, should be conveyed to the pen-nib from below. Again, thecontrolling-piece has material advantages in that it provides a cleanpen under all circumstances and conditions. Vhen the pen is inverted andmaintained in the pocket, for instance, it ordinarily occurs that heatfrom the body will cause an etflux of air from the reservoir, and itoften occurs that the efliux of this air from the reservoir will, withthe ink, produce a film which is discharged from the free end of thenozzle into the cover F of the pen, where it explodes and smears thecover and nozzle of the pen. However, in accordance with my presentinvention the abutment or pin 1: of the controlling-piece arrests thefilm in its upward movement, and thereby prevents it from beingdischarged from the free end of the nozzle. Thus it will be seen that aclean and efficient pen which is simple in construction is provided bymy invention.

It will be understood that the controllingpiece may be employed,together with any other auxiliary or additional features which may bedeemed necessary for the specific ends to be attained.

The subject-matter embodied herein constitutes a division of myapplication, Serial No. 23,572, tiled July 14, 1-900.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. In a fountain-pen, the combination of a nozzle having a bore thereinwhich is in open communication with the reservoir and with the air, apen-nib situated in the bore of said nozzle so as to divide the same anda controlling-piece contained within the bore of said nozzle beneath thepen-nib, said controllingpiece comprising a plurality of pins.

2. In a fountain-pen, the combination of a nozzle having a bore thereinwhich is in open communication with the reservoir and with the air, apen-nib situated in the bore of said nozzle so as to divide the same,and a controlling-piece contained wholly Within the bore of the nozzlebeneath the pen-nib, said controlling-piece comprising a plurality ofpins which are in contact with the pen-nib and with the wall of thebore.

3. In a fountain-pen, the combination of a nozzle having a bore thereinwhich is in open communication with the reservoir and with the air, apen-nib seated in the bore of said nozzle so as to divide the same and acontrolling-piece contained within the bore of the nozzle beneath thepen-nib, said controllingpiece comprising a plurality of pins, the planeformed by said pins extending longitudinally of the bore.

4. In a fountain-pen, the combination of a nozzle having a bore thereinwhich is in open communication with the reservoir and with the air, apen-nib seated in the bore of said nozzle so as to divide the same and acontrolling-piece contained within the bore of the nozzle beneath thepen-nib, said controllingpiece comprising a plurality oftransverselyextending pins which are spaced apart.

5. In a fountain-pen, the combination of a nozzle having a bore thereinwhich is in open communication with the reservoir and with the air, apen-nib seated in the bore of said nozzle so as to divide the same and acontrolling-piece contained within the bore of the nozzle beneath thepen-nib, said controllingpiece comprising a plate which is slitted toform a plurality of pins.

WILLIAM W. STEWART.

Witnesses:

CHARLES E. SMITH, BELLE PEYSER.

